Girls, I need a little bit help about the determining ring sizes. You see, I just reached 19th yesterday and my boyfriend is being so sweet and wanted to give me a white gold ring as a birthday gift. I'm a little confused about my ring size. Usually, I tried various rings to know my size but we're miles apart. He's in Kl while I'm in Sabah. He wants to buy one at Poh Kong or Tomei.

Technically, I need to know how to measure and the chart of ring size we, Malaysian used ( Us/Canada, Uk/AUSIE, China/Jpan, switzerland)

Thank you in advance